Plant and method for processing low-concentration high-capacity foul gas

Abstract

The invention belongs to the technique field of treating the foul gas, which in detail is the device and process by the organic combination of the 172nm quasi-molecular ultraviolet technology and honeycomb activated char adsorption-catalytic oxidation bed. The device id formed by the order connection of filtering net, photo dissociation reactor, honey comb activated char bed and fan. The photo dissociation reactor employs the 172nm quasi-molecular ultraviolet lamp and is in hollow cylinder structure. The ozone, HO. and HO2.and other groups of high activity generated from the photo dissociation reaction; the malodorous substance not completely broke up and the oxygen in the air are all accumulated in the micro-porous structure of the activated char through the adsorption action of the activated char; oxidizing and decomposing the malodorous substance by applying the media and catalytic oxidation function of the activated char. The method in this invention can treat the foul gas of low depth and large air quantity with a high effect and in large scale.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and is a novel malodorous gas treatment device and method which organically combine excimer ultraviolet light technology and honeycomb activated carbon adsorption-catalytic oxidation bed. Background technique [0002] As one of the environmental hazards, stench has attracted more and more attention, and it is one of the most complained environmental problems by residents after noise. Therefore, it is very necessary to find a practical and economical method to control the stench in the environment. Odor is a kind of public nuisance gaseous pollutants that cause unpleasant sensations and are harmful to human health through the air medium acting on human olfactory organs. Most of them are compounds containing carbon, hydrogen, oxygen, sulfur or nitrogen, such as hydrogen sulfide, sulfur Alcohols, styrene, trimethylamine and organic acids, etc. Malodorous substances are also highly toxi...

AI Technical Summary

Problems solved by technology

[0006] 1. The light efficiency of ordinary excimer ultraviolet light sources is low, and the light efficiency of 172nm is generally less than 10%, which is difficult to promote and use on a large scale;

[0007] 2. Ordinary excimer ultraviolet light sources have low single-unit power, generally less than 100W, and the installed capacity is huge when used to treat large amounts of malodorous gases;

[0008] 3. The tail gas treated with 172nm ultraviolet light contains a large amount of ozone, which cannot be fully utilized and causes secondary pollution;

[0009] 4. The electrode is in direct contact with the gas to be processed, and there is a problem of corrosion

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